LESSON 11 Warm up intro example notes classwork
- Slides: 46
LESSON 11 Warm up, intro, example, notes, classwork
Warm Up
Warm Up
Example, part 1 Now try working backward. Rewrite the following standard form quadratic expressions as perfect squares. What’s different about the last row? How could you change it so that it could be a perfect square?
Example, part 2 To be a perfect square, want the same factors on each side of the square. To “complete the square” the corner should have 16, but we only have 3.
Notes – Completing the Square In order to rewrite a quadratic expression or equation as a perfect square binomial, the 3 rd term (c) must be half of the middle term (b), squared. If it isn’t already, you can adjust the expression or equation. In doing so, make sure you maintain equivalency: Expression (Lesson 11 -12): add AND subtract the same number (so you are really just adding 0). Equation (Lesson 13 and beyond): do the same thing to both sides of the equation
Classwork Must Do May Do • Classwork 11 #1 - 8 • Khan Academy • Reflection questions • Exponents review • Linear equation practice • Slope practice • Test completion • Classwork 11 #9 -10
LESSON 12 Warm Up, example, notes, example, classwork
Warm Up
Example 1
Notes – Business Application Vocab •
Example 2 •
Workshop Must Do May Do • Classwork 12 #1 -6 • Complete cw #11 • Summary/Reflection • Khan Academy • Crossing River/Carnival Bears • Linear Equation practice • Exponents review • Slope practice
LESSON 13 Warm up, example, notes, example classwork
Warm Up •
Example 1 •
Example 1, follow up •
Notes •
Example 2 • •
Classwork Must Do May Do • Exit ticket 11 -12 • Khan Academy • Classwork 13 #1 -4 • Exponents review • Reflection/summary • Linear practice question • Slope practice • Test rewrites
LESSON 14 Warm up, intro, notes, examples, classwork
Warm Up • Which of these problems makes more sense to solve by completing the square? Which makes more sense to solve by factoring? How could you tell early in the problem solving process which strategy to use?
Intro •
Notes – The Quadratic Formula • The axis of symmetry/vertex Step left and right this amount to the x-intercepts
Example •
Classwork Must Do May Do • Classwork 14 #1 -6 • Khan Academy • Summary/reflection • Exponents review • Linear practice • Slope practice • Test rewrites
LESSON 15 Warm up, classwork, discussion, notes, classwork
Warm Up • What are the differences between the two? Is there more than one way to solve? Is one pathway MORE correct than another?
Classwork, part 1 Complete problems 1 -5 using the quadratic formula. THINK: #1 – what is an easier way to solve this problem? #2 – what’s confusing about this problem? #3– 5 – how many solutions do these equations have?
Discussion Describe the solutions of these quadratic equations. What makes these equations different?
Notes
Classwork Must Do May Do • Exit ticket #11 -12 • Khan. Academy • Classwork 15 #1 -10 • Crossing the • Summary question River/Carnival Bears • Exponents review • Linear practice • Slope practice • Classwork 15 #11 -12 • Make up classwork 11 -14
LESSON 16 Warm up, review, examples, notes, classwork
Warm Up •
Recall This chart holds true for quadratic functions. For the parent function y=x 2, the vertex is (0, 0). Translations move the vertex.
Examples •
Notes •
Workshop Must Do May Do • Exit ticket 14 -15 • Khan. Academy • Classwork 16 • Linear equation practice • Summary/reflection • Exponents review questions • Slope practice • Vocabulary work • Lesson 15 extensions
LESSON 17 Warm up to example, notes, classwork
Warm Up •
Example (continued from warm up) •
Example (continued from warm up) • What features are visible in standard form? What about in vertex form?
Example Summary / Notes An equation given in standard form quickly reveals the yintercept (c) and general shape and direction (a) of the graph. To graph it you can: --Factor it to find the x-intercepts (when y = 0) and then find the vertex by averaging the x-intercepts. -- Complete the square to find the vertex and then set equal to 0 and solve to find the x-intercepts --Use the quadratic formula to find the x-intercepts. Stilll need the vertex. --Plot the points you know (at least 3 required)
Example, last part • Key Features: x and y-intercepts and the vertex What is an appropriate domain? Range? What do the 3 and 150 represent? What do the zeros of the function tell us about the ball’s flight?
Workshop Must Do May Do • Classwork 17 #1 -7 • Khan. Academy • Summary/reflection • Classwork 15 extensions question • Linear equation practice • Exponents review • Slope practice • Vocabulary section
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